Because you want your figure’s size to depend on the amount of data being shown, and also no “squishing” of the cells, that means your nucleotide cells should have a fixed size. That’s why it’s best to start from there, pick a size, and calculate the axis size that’s needed to contain that data in unsquished form. The function resize_to_layout! can correctly pick up this size to calculate the figure size so there’s no whitespace. Note that autolimitaspect and aspect have a different behavior, check this page https://makie.juliaplots.org/stable/tutorials/aspect-tutorial/ for reference.
msa_matrix = permutedims([
'-' 'G' 'G' '-' 'C' 'T' 'T' 'G' 'C' 'T' 'T' 'A' 'T' 'T' 'G' 'T' '-' '-' 'G' 'T'
'-' 'G' 'G' 'C' 'T' 'T' 'G' 'C' 'T' 'T' 'A' 'T' 'T' 'G' 'T' 'G' 'T' 'G' 'G' 'T'
'C' 'G' 'G' '-' 'T' 'T' 'G' 'C' 'T' 'T' 'A' 'T' 'T' 'G' 'T' 'G' '-' '-' '-' 'T'
'C' 'G' 'G' '-' 'T' 'T' 'G' 'C' 'T' 'T' 'A' 'T' 'T' 'G' 'T' 'G' '-' '-' 'T' '-'
])
levels = Dict(
'A' => 1,
'C' => 2,
'G' => 3,
'T' => 4,
'-' => 5,
)
colormap = tuple.([:yellow, :blue, :green, :red, :magenta], 0.5)
cellsize = (20, 20)
f = Figure(fontsize = 12, backgroundcolor = :gray95)
axis_size = size(msa_matrix) .* cellsize
ax = Axis(
f[1, 1],
xgridvisible = false,
ygridvisible = false,
xticks = 1:size(msa_matrix, 1),
yticks = (1:size(msa_matrix, 2), ["a", "b", "c", "d"]),
yticksvisible = false,
yreversed = true,
width = axis_size[1],
height = axis_size[2],
)
hidespines!(ax)
heatmap!(ax, [levels[m] for m in msa_matrix], colormap = colormap)
text!(ax, vec(string.(msa_matrix)),
position = vec(Point2f.(Tuple.(CartesianIndices(msa_matrix)))),
align = (:center, :center),
textsize = 12,
)
resize_to_layout!(f)
f
And if I increase the size of the dataset:
The apparent text size difference is just due to scaling on this website.